Resources for Personal Trainers: The Science Behind Exercise

When we started doing our first PT qualifications we noticed that the course materials and resources we were given weren’t particularly good and that there was a lack of good online resources to help people studying to become PTs. Having qualified and also spent time teaching PT courses, we decided to remedy that.

Therefore, this is a resource for anyone studying to become a personal trainer (or teaching people who are) but even if you just want to know more about the science behind what you do in the gym then you should still find it useful.

The main sections on this part of the site are:

Level 2 Certificate in Gym Instructing: covering many topics in the first course you’ll do when qualifying as a PT.

Level 3 Diploma in Personal Training (Practitoner): looking at many topics from the second course you’ll do in order to fully qualify as a PT.

Supplementary Topics: useful resources for areas not properly covered on these courses but useful for a PT to know.

Level 2 Certificate in Gym Instructing

Whilst these articles do not cover the full syllabus for this course, they nonetheless include a lot of diagrams, tables and methods of explaining things that should usefully supplement the main course materials.

Furthermore, the revision sheet at the bottom contains pretty much all the key points that you’ll need to know, and there’s then a mock exam so you can test yourself.

These articles are grouped together under the relevant topic heading as they usually appear in the Level 2 Anatomy manuals:

The Structure and Function of the Circulatory System

The Chambers of the Heart including the atria, ventricles and major blood vessels.

Diagram illustrating the four chambers of the heart: left and right atria (atrium) and left and right ventricles, showing the direction blood flows through the heart. Suitable for use on Level 2 Certificate in Gym Instruction taught by YMCA and Active IQ. Four chambers of the heart. Atrium and ventricle. Which direction does blood flow through the heart? What are the chambers of the heart? What are atria and ventricles? What is an atrium and a ventricle?

The Structure and Function of the Respiratory System

The Journey Taken by Air as it is Inhaled including the bronchi, bronchioles and alveoli.

Picture of the route taken by air as it is inhaled: pharynx, larynx, trachea, bronchi, bronchioles and alveoli. Suitable for use on Level 2 Certificate in Gym Instructing course taught by YMCA and Active IQ. Process of inhalation. Route of air when breathing in. What route does air travel when breathed in? How does air go through the body?

The Structure and Function of the Skeleton

The Five Main Functions of the Skeleton such as support, protection and storage.

Image showing the five main functions of the skeleton - movement, storage, protection, framework and production - suitable for use in Level 2 Certificate in Gym Instructing course taught by YMCA and Active IQ. Table showing functions of the skeleton. Picture showing functions of the skeleton. What are the five functions of the skeleton?

The Five Sections of the Spine: the cervical, thoracic, lumbar, sacrum and coccyx.

The Three Main Postural Deviations: kyphosis, lordosis and scoliosis.

The Joints of the Skeleton

Three Types of Connective Tissue: tendons, ligaments and cartilage.

Diagram showing the difference between three types of connective tissue: tendons, ligaments and cartilage. What are tendons? What is cartilage? What are ligaments? Diagram of tendons, ligaments and cartilage. Picture of connective tissue. Picture of tendons, ligaments and cartilage.

Joint Movement Terms: just what do all those terms like flexion, extension, pronation and supination mean?

Diagram showing the joint movement terms allowed by thel joints of the body. Joint movement diagram. What are the joint movements? What movements can synovial joints perform? What are the names for joint movements? Anatomical movement terms. Joint movement terms. Synovial joint movements. What are joint actions? Level 2 Gym instructing joint movements. Level 3 Personal Trainer joint movement terms. YMCA Level 2 joint movements. Active IQ Level 2 joint movement terms.

The Muscular System

The Types of Muscle Contraction: isometric and isotonic, including concentric and eccentric.

Diagram illustrating the types of muscle contraction, isometric and isotonic, as well as the two phases of an isotonic move: the concentric and the eccentric. What do concentric and eccentric mean? Picture of concentric and eccentric. Isometric and isotonic moves. What are the two stages or phases of an isotonic move?

The Three Types of Skeletal Muscle Fibre: Type I, Type IIa and Type IIb

Diagram explaining slow twitch (Type I) and fast twitch (Type IIa and Type IIb) muscle fibres. Includes alternative names: slow oxidative fibres, fast oxidative glycolytic fibres and fast glycolytic fibres. Suitable for use in Level 2 Certificate in Gym Instructing course taught by YMCA and Active IQ. Table of muscle fibre types. Table showing three types of muscle. Table showing fast and slow twitch muscle. What are the three types of muscle fibre? What are slow and fast twitch muscles? What are Type I and Type II muscle fibres?

The Structure and Function of the Digestive System

The Journey Taken by Food During the Digestive Process

Picture of the digestive process. As taught in Level 2 Certificate in Gym Instructing Course taught by YMCA and Active IQ: mouth, esophagus (oesophagus), stomach, small intestine, large intestine. How does food travel through the body? What route does food travel through the body?

Energy Systems and Their Relation to Exercise

The Three Energy Systems: phosphocreatine, anaerobic/lactic acid and aerobic.

Table showing the differences between the body's three energy systems: phosphocreatine, lactic acid/anaerobic and aerobic. Suitable for use in Level 2 Certificate in Gym Instructing and Level 3 Diploma in Personal Training (Practitioner) courses taught by YMCA and Active IQ. What are the three energy systems? Three energy systems table.

The Nervous System

The Nervous System including the central nervous system and peripheral nervous system.

Diagram of the nervous system as taught in Level 2 Certificate in Gym Instructing. Can be used in YMCA or Active IQ syllabus. Nervous system Level 2. Picture of nervous system level 2.

What is a Neuron? A look at the structure and function of a neuron.

Diagram of a motor neuron attaching to a muscle fibre including cell body, dendrites, axon, impulse, myelin sheath and axon terminals. Suitable for use in Level 2 Certificate in Gym Instructing and Level 3 Diploma in Personal Training (Practitioner) courses taught by YMCA and Active IQ. What is a neuron? Picture of a neuron. How does a neuron attach to a muscle? What does a neuron look like? What is the structure of a neuron?

The All or None Principle: a rule about neurons that the exam always wants you to know.

Level 2 Revision Sheet and Multiple Choice Mock Exam

Once you’ve gone through the whole anatomy syllabus, check out this revision sheet, which covers most of the main points of the unit:

And if you’re feeling confident, here’s a mock exam for the Level 2 PT qualification. It covers all the topics, and the questions are the kind of thing you’ll find in the actual exam, along with a few others to encourage you to think:

Other Syllabus Topics

These articles relate to selected topics from the other course units that may be useful:

A Guide to Mobility, Warming Up, Cooling Down and Stretching: explaining the different types of stretching, as well a pulse-raising and pulse-lowering, and where to place all this within a workout.

Micronutrients, as covered in the unit Lifestyle management and health awareness.

Nutrition, covering a wide range of topics including the structure and function of protein, calorie calculation, BMR, some common nutrition questions and other topics relevant to this unit.

The Borg Scale: a common system used to measure exercise intensity.

Diagram of the Borg Scale including Borg CR10 scale, MHR, BPM, effort and energy systems. Can be used in Level 2 Certificate in Gym Instructing and Level 3 Diploma in Personal Training (Practitioner) qualifications taught by YMCA and Active IQ. Borg scale in colour. Borg scale diagram. Borg scale with energy systems. Borg scale printable. What is the borg scale?

Level 3 Diploma in Personal Training (Practitioner)

Again, we haven’t covered the whole syllabus here (hey, it’s a long, complicated and involved course so that’s your tutor’s responsibility!) but what we have included is some useful ways of remembering things that may well be in the exam.

The Level 3 topics currently covered are:

The Nervous System including the new things added at Level 3: four types of sensory receptor as well as afferent and efferent nerves.

Diagram of the nervous system. As taught in Level 3 Diploma in Personal Training (Practitioner) course. Can be used in conjunction with YMCA and Active IQ courses. Includes afferent and efferent nerves as well as sensory receptors. Picture showing nervous system Level 3. Diagram of Level 3 nervous system. How does the nervous system work? How do the central nervous system and peripheral nervous system work? What are sensory receptors? What are afferent and efferent nerves?

The Endocrine System, which sends signals around the body using chemical messengers called hormones.

Table illustrating the endocrine glands, the hormone each of them produces and what this hormone does, including hypothalamus, pituitary, pineal, adrenal, thyroid, parathyroid, pancreas, ovaries and testes. What are endocrine glands? What hormones do endocrine glands produce? Suitable for use on Level 3 Diploma in Personal Training (Practitioner) as taught by YMCA and Active IQ. Endocrine glands Level 3 PT.

The Three Types of Skeletal Muscle Fibre: Type I, Type IIa and Type IIb, but with the new details introduced at Level 3 such as contraction speed and alternative names.

Muscle Spindles and Golgi Tendon Organs: a look at the difference between these two types of proprioceptor.

Diagram examining two types of proprioceptor: muscle spindles and Golgi tendon organs. What are proprioceptors? What are muscle spindles and Golgi tendon organs? Picture of muscle spindles and Golgi tendon organs. Picture of proprioceptors.

The Anatomical Planes of Movement: frontal, sagittal and transverse, and how to remember the difference.

Diagram explaining the three planes of movement as taught in Level 2 Certificate in Gym Instructing and Level 3 Diploma in Personal Training (Practitioner) courses taught by YMCA and Active IQ: sagittal, frontal and transverse. Picture of planes of movement. What are the three planes of movement? What do sagitall, frontal and transverse mean?

The Three Classes of Lever: the three types of lever found in the body.

What are the three classes of lever? This diagram illustrates the three types of lever. First class lever, second class lever and third class lever. What are the fulcrum, load and effort? Level 3 Diploma in Gym Instructing (Practitioner) as taught by YMCA and Active IQ

Arteriosclerosis vs Atherosclerosis: the differences between these two conditions affecting the arteries.

Diagram showing the differences between arteriosclerosis and atherosclerosis. What are arteriosclerosis and atherosclerosis? Picture of arteriosclerosis and atherosclerosis. Differences between arteriosclerosis and atherosclerosis

Onset of Blood Lactate Accumulation, or OBLA, including the difference between this and DOMS.

The Anterior and Posterior Longitudinal Ligaments: two ligaments that prevent excessive bending of the spine.

Micronutrients: the different vitamins and minerals covered in the unit Nutrition to support physical activity.

Nutrition: articles relevant to this unit, including some common questions and some links to help you calculate a client’s nutritional needs.

Level 3 Anatomy Revision Sheet and Mock Exam

Here’s a revision sheet for the anatomy unit exam, too. It doesn’t cover everything, but should help you remember the key points of the syllabus:

And here’s a mock exam for the anatomy unit of the Level 3 personal trainer course:

Supplementary Topics

There are a number of subjects that aren’t properly covered in the Level 2 and Level 3 syllabuses but are still useful for a personal trainer to know, so we’ve put together some articles looking at them. At present, they cover:

How Can I Find Out What Weights I Should Use With New Clients?, an article explaining a way of establishing a client’s abilities before improving them.

The Differences Between a Squat and a Deadlift, so you can advise clients on correct form and technique.

Table showing the key differences between a squat and a deadlift, looking at hip and knee hinges, torso position, shin angle, muscles worked and starting position of weight. What are the differences between a squat and a deadlift? Suitable for use on Level 2 Certificate in Gym Instructing and Level 3 Diploma in Personal Training (Practitioner) courses.

What is Hypertrophy?: hypertrophy refers to making muscles bigger, but how does it work?

Protein, Amino Acids and BCAAs: a look at the functions of protein, its structure and recommended intake.

Free Radicals and Antioxidants: what these things are and what they do.

An Antioxidant offering an electron to a Free Radical, explaining how antioxidants neutralise the threat of free radicals.